Composite FISH image of activated sludge. Yellow = "Competibacteraceae"; Blue = "Ca. Accumulibacter"; Green = other cells. Scale bar = 10 microns. - Source:1
No physiological information is available, although, as a member of the genus "Competibacteraceae" these are thought to compete with the PAO for resources with their proliferation at the theoretical expense of EBPR efficiency 2.
Includes clades CPBS23 and CPBQ07
S23 - CPB586; Q07 - CPB449 3
 McIlroy SJ (2010) Phylogenetic Diversity and Ecophysiology of Alphaproteobacterial Glycogen Accumulating Organisms in Enhanced Biological Phosphorus Removal Activated Sludge Systems. PhD Thesis La Trobe University. - Mcilroy -
 Kong, Xia, Nielsen, Nielsen (2006): Ecophysiology of a group of uncultured Gammaproteobacterial glycogen-accumulating organisms in full-scale enhanced biological phosphorus removal wastewater treatment plants. Environ. Microbiol. 8 (3): 479-89. doi:10.1111/j.1462-2920.2005.00914.x
 McIlroy, Nittami, Kanai, Fukuda, Saunders, Nielsen, et al. (2015): Re-appraisal of the phylogeny and fluorescence in situ hybridization probes for the analysis of the Competibacteraceae in wastewater treatment systems. Environ Microbiol Rep 7 (2): 166-74. doi:10.1111/1758-2229.12215